Blender got ported to Linux in 1998, to Windows in 1999. The modal interface and key command language is no accident, it literally is a 3d vi.

Linux is generally strong when it comes to 3d graphics workstations, it inherited IRIX' market share, plenty of artists around, especially in the film industry, who'd go on a strike if you took away dragging windows with alt+LMB. Graphics, that is, CAD is dominated by Windows as CAD started out as 2d sketch software which ran on cheap DOS machines.

Houdini is also Unix-native and Blender's only surviving competitor (considered by features, not industry inertia), Maya started out as cross-platform IRIX+Windows.